Diffuser



FIG. 1 is a top and front perspective view of a diffuser, showing my design.

FIG. 2 is a front elevation view thereof.

FIG. 3 is a rear elevation view thereof.

FIG. 4 is a left side elevation thereof.

FIG. 5 is a right side elevation thereof.

FIG. 6 is a top plan view thereof.

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is an enlarged view of an area labeled 8 in FIG. 1.

The broken lines shown in the drawings are included for the purpose of illustrating portions of the diffuser that form no part of the claimed design. 

CLAIM The ornamental design for a diffuser, as shown and described. 